add HLIL debug report example

Author: psifertex

docs/dev/bnil-hlil.md

@@ -14,7 +14,15 @@ The High Level Intermediate Language (HLIL) is Binary Ninja's decompiler output.
 * Small discrete operations
 * Enables source-level forms of queries and analysis
 
-In the rest of this article we will explore the instruction set.
+## Debug Report
+
+To observe the transformartions that occur from MLIL to HLIL, you can use the built-in [`debug report`](https://api.binary.ninja/binaryninja.function-module.html#binaryninja.function.Function.request_debug_report) API:
+
+```py
+> request_debug_report("hlil")
+```
+
+![HLIL Debug Report](../img/hlil-debug-report.png)
 
 ## The Instruction Set